Eraser cleaner



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ERASER CLEANER Original Filed Nov. 5, 1935 2 Sheets-Sheet 2 Ill b? JAM Inventor 8 9 gwwawfizm A tlomey til Patented Aug. 13, 1940 UNITED STATES oFFIjci:

November 5, 1935.

This application August 28,

y 1939, Serial No. 292,320

1 Claim.

This invention relates to a device for cleaning erasers, such as used on blackboards, the general object of the invention being to provide a casing having a plurality of paddles therein, one or more chutes passing diagonally through the casing and means for operating the paddles whereby the paddles will strike the erasers and free dust therefrom and at the same time cause the erasers to pass through the chutes.

Another object of the invention is to provide a fan for blowing the dust from the casing during the operation of the device.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which:

Figure 1 is a View looking into the interior of the device with the cover removed.

Figure 2 is a fragmentary elevation looking toward the hand wheel side of the device.

Figure 3 is a section on the line 33 of Figure 1.

Figure 4 is a fragmentary elevation looking toward the pulley side of the device but with the pulley removed.

Figure 5 is a section on the line 5-5 of Figure 3. I

Figure 6 is a sectional View through the paddle operating shaft.

In these drawings the numeral I indicates a casing which is provided with box-like cover 2 Whichis detachably connected with the casing by the latch means 3. A plurality of longitudinally extending strips 4 are located in spaced relation adjacent the open side of the casing and elongated paddles 5 are located between these strips and between some of the strips and the sides of the casing, these paddles being pivotally supported by a shaft 6 passing through the paddles, adjacent one end thereof and said ends of the paddles are provided with the metal clips 1.

A shaft 8 is 'journaled in the sides of the casing and has the projections 9 thereon for engaging the clips so that the shaft is rotated by the hand wheel ID on an exterior end of the shaft, the

projections will cause the paddles to move into the space formed by the cover and said paddles are pulled back by the springs H, one of which is connected to each paddle and to the closed side of the casing; A pair of diagonally arranged chutes l 2 pass from one side of the casing through theother side, the diagonal arrangement of the chutes imparting a slope to the chutes from said one side to the other and the chutes extend well beyond said other side as shown in Figure 1. Thus the erasers shown at A in Figure 3, which are placed in the high end of the chutes andas said chutes are arranged adjacent the free ends of the paddles said ends of the paddles will strike the erasers as they are pulled back by the springs H and thus the paddles will clean dust from the erasers. Also the striking of the erasers by the paddles will cause the erasers to move along the chutes until they drop from the extended parts thereof.

The outer side of the chute as clearly illustrated is covered with a wire mesh l3.

An opening I 4 is formed adjacent one end'of the casing in that side opposite the side on which the hand wheel is located and a spider l5 extends across said opening and has its central portion forming a bearing for a shaft Hi, the other end of which is journaled in the opposite side of the casing and said shaft carries the blades H, the shaft and its blades forming a fan which acts to draw airinto the casing through the opening 14 and this air will blow the dust from the erasers through an opening 18 in theopposite end of the casing. The shaft I6 is connected with the shaft. 8 by the belt and pulleys shown generally at l9.

Brackets 20' are attached 'to the casing so that the casing can be fastened toa support.

The opening M can be closed or partly closed by the substantiallysemi-circular plates 20 each having a corner pivoted to the casing as shown at 2 Thus it will be seen that I have provided a simple form of device for removing dust from erasers, with the parts arranged in a closed casing so that the dust is prevented from flying around a room or the like and when desired the outlet opening can be connected by a hose or the -like with a chimney pipe or a furnace. It is simply necessary to place these erasers in the high end of the chutes as the paddles will not I invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

Having thus described my invention what I claim is:

A device of the class described comprising a casing, paddles located in the casing, means oscillating the paddles, a chute passing substantially transversely through the casing for receiving the articles to be cleaned while being struck by the paddles, the inner side of said chute adjacent said paddle being open, a mesh covering for the outer side of said chute, said chute sloping from its inlet end downwardly to its outlet end.

GEORGE C. SIMMERMAN. 

